@Marked-JS中的Array之length不同JAVA之处

1.length属性可写

 

a=[2,4,5,6,7,90];
//a.length->6
a.length=8;
//a=[2, 4, 5, 6, 7, 90, undefined , undefined]

 2.length末尾自增

a[a.length]=108;
a[a.length]=109;
//a=[2, 4, 5, 6, 7, 90, undefined ,undefined , 108, 109]